All About Plants Printable Book - Montessori for Everyone

All About Plants
What are plants?
Plants are living things that are made up of cells. They need air,
water, soil, and sunlight to live. They cannot move from place to
place, but their leaves move to catch the sun and their roots move towards
water. Their seeds can be carried by animals or blown by the
wind.
We get food from all different parts of the plant: flowers, fruits, vegetables,
seeds, nuts, stems, and leaves. Grass gives us a cool, soft place to
walk. Some plants give us medicine, and trees are used to make
paper and furniture.
In this book, you will learn about how plants are classified (organized),
how they live, and how they make their own food.
You will discover that the world uses plants in many
different ways.
Over 270,000 species of plants have been identified
and classified, but scientists believe that there are
millions more waiting to be discovered.
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About the Plant Kingdom
The Plant Kingdom is a way to classify (or organize) plants. They are
divided into groups based on the traits they have in common.
Scientists change the way plants are classified from time to time,
when they discover new types of plants or learn new things about
plants.
The two main groups are vascular plants (plants that use stems and
veins to transport food and water), and non-vascular plants (plants
with no roots, stems, or leaves).
Vascular plants can divided into smaller groups, one of which is
seed plants. This group includes flowering and non-flowering plants.
Flowering plants include monocots (one seed leaf) and dicots (two
seed leaves). The non-flowering plants can also be divided into
several groups, including cycads, conifers, and ginkgo.
The Plant Kingdom
Non-Vascular Plants Vascular Plants
Liverworts, Hornworts,
and Mosses
Club Mosses, Horsetails,
and Ferns
Non-Flowering Plants Flowering Plants
Conifers, Cycads,
and Ginkgo
One Seed
Leaf
Seed Plants
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Two Seed
Leaves

All About Flowering Plants
All green plants that have flowers are called flowering plants. Scientists
have grouped these according to the number of seed leaves
found in each plant.
Monocots (or monocotyledons) have one seed leaf; dicots (or dicotyledons)
have two seeds leaves. These leaves provide the food
the young plant needs until it can make its own food. Flowering
plants consist of four main parts: (1) roots, (2) stem, (3) leaves, and
(4) flowers.
Dicot
(two seed leaves)
All About Non-Flowering Plants
Plants without flowers are called non-flowering plants, or gymnosperm.
While they do produce seeds, the seed is not enclosed in a
flower (and eventually a fruit) the way seeds are in flowering plants.
Non-flowering plants are very common, and
include evergreens (conifers), cycads, and
ginkgo. Popular types of conifers include fir
and pine trees. These trees are characterized
by sharp needles and produce cones that
hold the seeds. (See picture: pine cones and needles)
Monocot
(one seed leaf)
Cycads are tropical plants with compound leaves and a sturdy
trunk. Ginkgo trees are one of the oldest kinds of trees known to
exist. They are usually very tall and have unique fan-shaped leaves.
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All About Trees
There are two different types of trees: non-flowering trees that have
seeds that are not enclosed, and flowering trees that have seeds
that are enclosed. An example of a non-flowering tree would be an
pine tree. An example of a flowering tree would be a fruit tree, such
as peach or orange.
Flowering trees are deciduous; that is, they shed their leaves every
year. Other trees are conifers; they grow new leaves before shedding
old ones, and stay green all year
round (“evergreen”).
Trees consist of roots, trunk (stem),
branches, twigs, and leaves. The tallest
trees in the world are the redwoods of
California, which can grow to be 379 ft
(115.55 m) in height.
All About Roots
The roots of a plant have root hairs that absorb water and minerals
from the soil. The root caps protect the root when it bumps into hard
things under the ground.
The roots of a plant always grow towards water. They will even grow
around rocks or other obstacles to reach water. They also help
anchor the plant in the ground, and keep soil in place so it is not
washed away.
Some of the food we eat comes from
roots, like carrots, beets, turnips,
radishes, and potatoes. These are
roots that store food for the growing
plant.
Radishes—an edible root.
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All About Leaves
Leaves help plants make their own food. Within the leaf is a green
material called chlorophyll. Chlorophyll absorbs sunlight to make a
natural sugar that the plants uses for food.
This process is called photosynthesis. During photosynthesis, carbon
dioxide is used by the plant, and oxygen is released. This makes trees
and plants a great way to keep the air on earth fresh and clean.
The leaf has veins for carrying this sugar to other parts of the plant. The
flat, green part of the leaf is called the blade. The edge of the leaf is
called the margin. A good nickname for leaves is “suncatchers”,
because they catch the sun that the plant needs
to make food.
In the fall, leaves lose their chlorophyll. That allows
the other colors in the leaf to show, so that we see
yellow, orange, red, and even purple leaves.
All About Flowers
Plants use flowers to reproduce (make more of themselves). The
flower’s job is to produce a fruit, which contains seeds. Flowers are
used by humans to add beauty to outdoor and indoor areas, and
some flowers can also be eaten.
Flowers, or blossoms, are made up of petals, called the corolla,
which are usually brightly colored. The bright colors attract birds
and insects, who spread pollen from one flower to another. This
fertilizes the seeds and allows new plants to grow.
Other parts of the flower include the calyx, the
green leaves that surround the petals; the stamen,
which produces the pollen; and the pistil, which
receives the pollen from another flower to fertilize
the plant.
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All About Seeds
Many plants use seeds to reproduce. A plant produces a very small
version of itself, called an embryo. This embryo, together with its stored
food, is covered with a thin covering called the testa (seed coat). The
embryo, stored food, and testa make up the seed.
This seed will grow into a new plant. The seed uses the stored food to
grow until it is big enough to make its own food, using its leaves. The
seed coat protects the seed until it is ready to grow.
For a seed to germinate (start to grow), it needs to be in moist soil. The
water causes the testa to split apart. Then the root tip of the seeds can
grow into the ground.
Plants spread their seeds in many ways. Some seeds are
blown by the wind; others are carried by insects, birds, or
mammals. Nuts, a type of seed, are often buried in the
ground by animals and some result in new plants. Some
seeds fall into water and are carried to new places.
All About Fruit
Some plants grow a covering for their seeds. This
ripened part of the seed is called fruit. Tomatoes,
apples, and peaches are some of the plants that
grow in this way.
Vegetables are actually the fruit part of the plant.
Generally, the ripened part of the plant is called
“fruit” if it is sweet, and “vegetable” if it is savory,
or less sweet.
The outer skin of the fruit is called the exocarp. The fleshy part of the
fruit, the part we eat, is called the mesocarp. The inner part of the fruit
that covers the seeds is called the endocarp. All three of these layers
put together are called the pericarp.
Humans and animals use fruits and vegetables as a great source of
food. Most fruits can be eaten raw, although they can also be cooked
or baked. Vegetables generally taste better after being cooked.
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All About Stems
There are several different types of stems. Flowering plants like carnations
and tomatoes have soft stems. Trees and bushes have hard,
woody stems.
Woody stems have an outer covering called bark. Underneath the
bark is a layer of growing cells called cambium. Every year, trees grow
another layer of cambium. Counting these layers (or rings) tells you how
old the tree is.
The stem of a plant has five main jobs: (1) to support the leaves, flowers,
and fruit of the plant; (2) to act as a highway, bringing water and
nutrients to the plant; (3) the storage of food for the plant; (4) holding
up the leaves so that they can catch sunlight; (5) producing new living
tissue for the plant.
Some stems are edible—asparagus (shown) and
rhubarb are two examples.
Sentence Completion
Find the correct word to complete the sentence and write it on your paper.
1. The _______________ of a plant hold it in the ground.
2. A _____________is a living thing that makes its own food.
3. The _______________of the flower produces pollen.
4. _______________ is the substance that makes leaves green.
5. Some flowers make a cover for their seeds. This is called __________.
6. The roots are protected by the _________________.
7. The plant uses air, water, and ___________ to make its own food.
8. Plants use flowers to ________________.
9. The embryo of the plant is covered by the _________________.
10. One of the jobs of a __________is to support the leaves, flowers, and
fruit.
fruit chlorophyll stamen roots stem
plant seed coat sunlight root caps reproduce
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Self-Study Questions
Write the answers on your paper in complete sentences.
1. What two groups make up the plant kingdom?
2. Name one type of non-flowering plant.
3. How many seed leaves does a monocot have?
4. List the four main parts of a flowering plant.
5. Name two jobs of the root.
6. Name three kinds of roots that we eat.
7. What kind of stem do trees and bushes have?
8. Name two jobs of the stem.
9. How do leaves make food for the plant?
10. Why are the petals of a flower brightly colored?
11. What is the part of the fruit we usually eat?
12. Name the four things that a plant needs to survive.
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